product news/產品新聞
Inoculants Help Achieve Optimal Nucleation 孕育剂使形核优化
When looking at the production cycle in a foundry, key
factors are stability, consistency, continuous improvement and cost effectiveness. Elkem provides alloys for the three key stages in the treatment of cast irons: furnace based pre- conditioner, a wide selection of MgFeSi alloys for processing ductile iron and a range of inoculants to suit all applications. Tis complete package of materials has been developed based on a deep understanding of the foundry processes and on fundamental research to understand the mechanisms of nucleation in cast irons. Elkem’s research team based in Norway has pioneered
work on nucleation in both ductile and gray cast iron. Based on this understanding such powerful inoculants as Ultraseed Ce, Ultraseed Zr and Superseed Extra inoculants have been developed. Tese inoculants increase the nucleation level, re- duce shrinkage and eliminate carbides, and can be used both in the ladle and in the stream of metal as it enters the mold. Ultraseed Ce is particularly useful in thin section irons while the Zr version is finding difficulty in iron inoculation, such as those produced from pure magnesium processes. Super- seed Extra inoculant is the right alloy for producing shorter graphite flakes in gray iron, hence improving the machined finish of the iron.
Understanding of the inoculation mechanisms in gray
iron has led to a powerful preconditioning material now be- ing used successfully in the market both in gray and ductile iron. Tis is known as Preseed preconditioner. In both of these developments, the prime consideration has been nucleation—the key word in the selection of any method, alloy or process for the production of irons. Some production processes are not helpful to maintaining inherent nuclei in the iron as it is melted or treated, and the use of Preseed preconditioner will help to restore some stability to the process. Similarly, Elkem’s large portfolio of MgFeSi alloys,
especially the Lamet nodularizer range, has been designed to minimize reactivity in the ladle and thus maximize both
nucleation retention and magnesium recovery. Elkem will be exhibiting at GIFA in Hall 13 Stand C40.
铸造厂实际生产中，关键影响因素是稳定性、一致 性、持续改进能力和成本效益。埃肯公司生产的合金 用于铸铁处理过程的3个关键阶段。公司提供投放于熔 炼炉中的预处理材料，一系列用于球墨铸铁的硅镁合 金和适合于所有应用系列的孕育剂。在深入了解铸造 工艺和铸铁形核机理的基础研究的基础上，已经研发 出了完整的材料组合。
埃肯公司挪威总部的研究小组，早已开展了球墨铸 铁和灰铸铁形核研究工作。在此基础上，Ultraseed Ce，Ultraseed Zr和Superseed Extra等高效的孕育 剂已研发出来。这些孕育剂可在浇包和金属液流进入 铸型时使用，提高了形成核水平、减少了缩松、消除 了碳化物。Ultraseed Ce对薄壁铸铁件特别有效，如 果是纯净镁处理过的铁液，使用Ultraseed Zr为孕育 剂会比较困难时。Superseed Extra孕育剂适合于生 产细小的片状石墨灰铸铁件，并因此使铸铁的机加性 能提高。
对灰铸铁孕育剂机理的认识，已经使有效的预处理 材料在灰铸铁和球墨铸铁生产中得到成功应用，这就 是Preseed预处理剂。
在这些研究中，首要考虑因素是成核，这也是铸 铁生产中合金和工艺选择的关键词。当铸铁被熔化或 处理时，生产工艺对保持内在的成核水平是没有帮助 的，而使用Preseed预处理材料将在一定程度上有助 于恢复成核的稳定性。
与此类似，埃肯公司的硅镁合金组合，尤其是 Lamet系列球化剂，可使浇包内的反应降到最小，从
而使成核和镁的还原效果达到最大。 埃肯公司将参加GIFA展，展位号：Hall 13，C40。
New Inotec Generation Gives Casting Advantages 新一代Inotec产品优化铸件生产
ASK Chemicals has further enhanced its inorganic
INOTEC technology through its new INOTEC TC 5000 and INOTEC HS 3000 products. Te new developments lead to improved shakeout and higher moisture stability of the cores. Te mounting advantages of using INOTEC technology for the metalcasting industry are not only odorless core production and odor-reduced casting produc- tion, but also the significantly lower cleaning required for
ASK化学公司已研制出新一代产品INOTEC TC 5000
和INOTEC HS 3000，进一步提高了其无机INOTEC技 术水平。新的研发成果改善了落砂效果和砂芯的高水分 稳定性。在铸造行业采用INOTEC技术的优势不仅是生 产铸件时砂芯无异味或异味少，还显著减少了清理设备
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FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION March 2015
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